OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ) z$ C4 @! F1 b9 T. x; k/ L# ~
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
     D# y/ ^* m: `
6. *
   1 R1 Z: N- ]. h$ Y* Y6 E. P
7. *   This file contains EDMA3 Test code.
   - N; k2 s( ]! ?4 S* T4 P/ P2 Z# |, `
8. *
   2 b  B7 F6 v7 Y4 w. g, b! y+ l" [$ w" h
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    2 _$ q. p" T" K+ w% \
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    9 V! h- U- ]* S
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    4 G! \( c- J1 N( T) ]
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    2 ?/ J# f$ M2 i
22. * GNU General Public License for more details.
    2 G1 V1 J+ v, U( j6 ~$ ?
23. */
    ; c' X0 N# U( g, w8 v1 S6 O. N
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    2 I) R6 H+ O$ X+ [" {
27. #include <linux/errno.h>
    ( H0 {. t4 d/ t7 j. g
28. #include <linux/types.h>
    7 V$ ]2 `' U5 X" c9 E
29. #include <linux/interrupt.h>
    3 Z6 Y& W/ {, B3 Z7 ?
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ; M% Z# R! \( {% S) ^/ k% H. h
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    - q- e* F$ _! O1 N9 z" i
36. #include <mach/memory.h>
    $ I9 H( W7 Z$ C9 ^" L% C
37. #include <mach/hardware.h>
    % m4 N, \8 M- a# b, ^6 _" I8 M
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    1 O! o( R0 N5 p( _. x1 f, K
40. 
    
41. #undef EDMA3_DEBUG
    8 c3 O$ H' V4 y( @
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    0 K& e/ l: P# v2 a9 R% J. ]0 m
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % p4 I3 u2 W8 z/ d
48. #else
    8 t( f# N; P) S( p' C+ ^: r
49. #define DMA_PRINTK( x... )
    0 ]4 l' ]  }  E# f; u  F
50. #define DMA_FN_IN
    : y6 o4 x" V2 l9 G
51. #define DMA_FN_OUT
    
52. #endif
    - E7 i. ?% I8 w4 v7 V3 h$ ?
53. 
    3 u. O1 b# [' S" r0 B. I- h
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
      v: @2 j; Q" Q
55. #define STATIC_SHIFT                3
    9 g& |; O, G+ Y; o7 n
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    / `- l, \* h$ A( a: P
59. #define ITCCHEN_SHIFT               23
    . p, b. v& \% W1 a& m: n" ?
60. 
      V( ^$ Q9 c1 c! m4 c/ c3 X" p. W( h. ~
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    + Q4 n+ `1 Z( d7 A% J4 Z7 J& u
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : ]* I- N* X. Y1 X5 U' N/ f2 t
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    + g* u8 [. R7 u* Q% ?- ^
71. dma_addr_t dmaphysdest2 = 0;
    8 O0 J5 U' {5 w
72. 
    4 s3 C& [% Q8 G% n# P
73. char *dmabufsrc1 = NULL;
    3 ?- R( n( d% J
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    : f2 y- S! o+ ?/ J& i+ c
76. char *dmabufdest2 = NULL;
    2 r8 B* E0 |3 L; G: k
77. 
    
78. static int acnt = 512;
    " h; N" u  u/ s+ J% W, z4 |
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ' f4 U; |' O. t- B! a: B4 ]
81. 
    
82. module_param(acnt, int, S_IRUGO);
    . H/ K5 C( N9 x; T$ w
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
9 ~2 [# J" C% l5 k& O8 w2 i